|Carbon Giro Pneumo||Sean008|
Jul 17, 2003 2:43 PM
|I know that "black" is known for absorbing heat. But I've also read that it is the the material of an object (i.e. metal, paint, plastic)that truly absorbs heat and not the color.
My question is...has anyone found the carbon Giro Pneumo to be hotter than lighter colored helmets?
|re: Carbon Giro Pneumo||seamus|
Jul 17, 2003 2:53 PM
|Nope, not at all. I ride a black Carbon Pneumo, and also a white Bell Ghisallo. No difference. And I live/ride in Davis, CA where it gets up to 113 (hottest ride I've ever done!) with very little shade.
One thing regarding color/heat I have noticed over the years is that black handlebar tape gets friggin' hot if you're not wearing gloves. But then again, it hides dirt, whereas white tape turns gray in a week.
|I have it. No heat problem. nm.||AllUpHill|
Jul 17, 2003 3:35 PM
|data from tests.... and a really simple explaination.||russw19|
Jul 17, 2003 6:32 PM
|Over the years I have seen at least 4 test that all came to the same finding... black helmets are not any hotter than lighter colored helmets. The surface may get hotter sitting in your car, but when you ride it, the air flow over them cools it to the exact same as any other helmet, plus that very thin layer of black plastic is sitting on top of an inch of styrofoam. (OK, it's not styrofoam, but you get the point... polystyrene?) The helmet is insulated from the outer shell by the same foam that protects your head. And as air passes thru helmets, it is usually accelerated via the Venturi Effect, making it much cooler than wearing no helmet at all.
But to put this logically, think of coffee in a styrofoam cup... if it's black coffee at 120 degrees F, or clear hot water at 120 degrees F, either way, if the foam of the cup is thick enough, you won't know it's hot in there to begin with. That may very well be over simplified, but it's the same point.
|I have the black one, no problem at all||Fez|
Jul 17, 2003 7:31 PM
|All Giro Pneumo helmets are identical except the very thin layer of black colored plastic over the foam shell, which is much thicker than the plastic layer.
Even if the black absorbs more heat, it would have to transfer thru the foam shell for you to feel it. I think you could never tell. You would probably feel more of a difference after getting a haircut than you could between a black or white colored helmet.
And the Pneumo is one of the better vented helmets out there. I like mine and I ride it in 90+ degree days. No problem.